Actium Posted 4 hours ago Posted 4 hours ago The SA-5 TR has a significantly higher range than its SR. With the TR emitting by default*, an SA-5 battery will lock and shoot a target within ±25° of the TR azimuth angle at ~130 nm range. This is likely far outside of the TR antenna main lobe width. When this happens, the TR azimuth will suddenly snap from its initial angle by 25° to the azimuth of the approaching aircraft: SA5_TR_Omniscient.trk The TR scans neither azimuth not elevation, sitting still until it magically becomes aware where to aim to lock the aircraft. When approaching 30° off the TR azimuth, it will only lock and engage an F-16 at a range of 70 nm. Presumably, getting the targeting information from its shorter range SR: SA_TR_Normal.trk *) Apart from the TR magically picking up targets outside of its antenna main lobe, I doubt it would be continuously emitting. Firstly, it would give away its location, inviting ARM attacks. Secondly, unlike an SR, the TR electronics would likely not be designed to emit continuously for hours/days, causing unnecessary wear and thus premature hardware failure.
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